Fluid exit port for boats



Dec. 3, 1968 A. A. LIPTON FLUID EXIT PORT FOR BOATS Filed March 22, 1967 w W M United States Patent Office 3,413,949 Patented Dec. 3, 1968 3,413,949 FLUID EXIT PORT FOR BOATS Abraham Allen Lipton, Mamaroneck, N.Y. (22 Lafayette Ave., New Rochelle, N.Y. 10801) Filed Mar. 22, 1967, Ser. No. 625,217 2 Claims. (Cl. 114-184) ABSTRACT OF THE DISCLOSURE The present invention relates to the provision of a hollow bolt and threadly associated nut structure which provides means for communication between the inner and outer surfaces of the hollow of a boat at portions disposed below normal water line, the bolt including a bore having a partially curvilinear axis to provide for the exiting of a fluid at an angle other than a right angle with respect to the line of movement of the boat, so as to reduce turbulence and drag.

This invention relates generally to the field of marine hardware, and more particularly to an improved fluid exit or inlet port construction whereby, for example, cooling water for an internal combustion engine of inboard type may be drawn into the hull and exited therefrom.

In relatively smaller size boats, the cooling fluid is carried by a flexible or rigid tubing, and is interconnected to a fitting which penetrates the hull of the boat to establish communication with seat water. Unlike scupper drainage the fiow of water is at a relatively high rate, and continuous, so that as the boat gains speed during operation, considerable turbulence is effected where the discharge is in the rear quarter portions of the hull, rather than the stern.

It is among the principal objects of the present invention to provide an improved fitting of the class described which will permit water to be taken into the cooling system of the boat, and exited at an acute angle with respect to the line of motion of the boat, so that this turbulence may be substantially reduced.

Another object of the invention lies in the provision of an improved porting fitting which may be conveniently installed by those possessing only ordinary skill and with out resort to special tools.

A further object of the invention lies in the provision of an improved exit port of the class described which may be used as a replacement in openings previously formed in existing boat hulls.

Yet another object of the invention lies in the provision of an improved exit port for boats, in which the cost of fabrication may be of a reasonably low order, with consequent wide sale, distribution and use.

Still another object of the invention lies in the provision of an improved exit port of the class described, in which the angle of fluid intake and fluid discharge may be adjusted to lie within a horizontal plane corresponding to that in which the boat moves over the water.

A feature of the disclosed embodiment lies in the unusually attractive appearance of the same.

Another principal object of the invention lies in the provision of an improved exit port of such configuration that when the boat in which it is installed is moving through the water with no discharge emanating therefrom, minimum turbulence and drag is produced.

These objects and features, as well as other incidental ends and advantages, will more fully appear in the progress of the following disclosure, and be pointed out in the appended claims.

In the drawing to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts through the several views.

FIGURE 1 is a fragmentary view in perspective showing a typical installation of the disclosed embodiment within a hull of a small boat.

FIGURE 2 is a fragmentary enlarged view in elevation corresponding to the lower left hand portion of FIG- URE 1.

FIGURE 3 is a fragmentary side elevational view, partly in section showing the penetration of a boat hull by the embodiment.

FIGURE 4 is a fragmentary vertical sectional view as seen from the plane 4-4 in FIGURE 2.

FIGURE 5 is a fragmentary enlarged horizontal sectional view as seen from the plane 5-5 in FIGURE 1.

FIGURE 6 is a fragmentary view in elevation showing an alternate form of the embodiment.

In accordance with the principal form of the invention, the device, generally indicated by reference character 10, is illustrated in FIGURE 1 in installed condition Within the hull 11 of a boat 12, the device penetrating an opening 13 communicating between the inner surface 14 and outer surface 15 of said hull. As best seen in FIGURE 3, the opening is formed to include a bore 16 of cylindrical configuration, and a tapered counterbore 17 communicating therewith. The device 10 comprises broadly a hollow bolt element 19, and a threadedly engageable flanged nut element 20.

As best seen in FIGURES 3 and 4, the bolt element 19 includes a chamfered head 22, a cylindrical portion 23, and a threaded shank 24. A generally centrally disposed bore 25 extends between an inner end 26 and an outer end 27, terminating in a curved portion 28 leading to an opening 29 lying in the plane of the outer surface 15. It will be observed from a consideration of FIGURES 4 and 5, that the curved portion 28 is formed by curving the principal axis of the bore 25, so that an imaginary circle of diameter equivalent to the bore 25 executes curved translation whereby the opening 29 is also a circle, the principal axis of which is parallel to the axis of the bore 25 and displaced therefrom. Thus, when fluid, generally indicated by reference character 30, moves outwardly through the opening 29, and mixes with the slip stream 31 of water through which the boat is passing, the fluid exits in a direction having a component thereof moving in a direction parallel to that of the slip stream 31, thereby materially reducing turbulence which would occur were the fluid to exit at right angles to the fluid.

As seen in FIGURE 1, intake water may be similarly angled, using a similar device 10 which has to be rotated through degrees with respect to the above device, so that the path of the water is gradually changed as it enters the boat hull.

It will be observed that in installing the device or devices 10, openings in the hull are formed having principal axes which are perpendicular to the surfaces 14 and 15 thereof, and when the bolt element 19 is inserted from the outer surface it may be conveniently rotated to desired orientation prior to engagement of the nut element 20.

The nut element 20 includes a radially extending flange 34 which may, if desired overlie a rubber sealing washer (not shown), or in the case of wood hulls, the same may be permitted to directly engage upon the inner surface 14. An integrally formed polygonal portion 35 threadedly engages the shank 24, leaving a portion thereof extending outwardly for the fitting of a hose (not shown) or other conduit.

In the alternate form shown in FIGURE 6 in the drawing, the feather edge 39 shown in FIGURES 3 and 4 of the principal form is replaced by a chamfered portion 40 having a short cylindrical portion 41 adjacent thereto, whereby the fragile edge is eliminated. In the installation of the alternate form, generally indicated by reference characters 38 an additional counterbore (not shown) may be provided in the hull to accomodate the cylindrical portion 41.

I wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occur to those skilled in the art to which the invention pertains.

I claim:

1. A fluid porting device for use in conducting a fluid through the hull of a 'boat below the normal water line comprising: A hollow bolt element including a chamfered head portion and a threaded shank portion, said shank portion having a fluid conducting bore extending therethrough, said bore including a first cylindrical portion thereof having a principal axis coaxially disposed with respect to the axis of said shank, and a second cylindrical portion thereof disposed within said head portion having a curved axis communicating with said first mentioned axis.

2. Structure in accordance with claim 1, in combination with a threaded nut element, said nut element including a radially extending flanged portion at one axial end thereof.

References Cited UNITED STATES PATENTS 3/1960 Veltman 114-183 FOREIGN PATENTS 57,158 10/1936 Norway.

1 ANDREW H. FARRELL, Primary Examiner. 

